Control of life support systems

Details Control of life support systems Control of life support systems

A - Human Necessities

61

M

A61M 1/10 (2006.01) A61M 1/36 (2006.01) A61M 16/00 (2006.01)

Patent

CA 2184992

The flow of a biological fluid to an organ is computer-controlled so that the natural variation of such flow is simulated. Specifically described are control of a blood pump flow output during CPB to mimic normal ?ulsatile blood flow from the heart and control of a ventilator output ?o mimic normal breathing of healthy lungs. A pattern of variation over time of instantaneous flow of a biological fluid to an organ of a mammalian species is established, a variable control parameter for regulation of flow of the biological fluid to the organ is generated in accordance with the pattern, and the flow of biological fluid to the organ is controlled in accordance with the variable control parameter.

L'écoulement d'un liquide biologique vers un organe est régulé par ordinateur de manière à simuler la variation naturelle de ce débit. On décrit plus spécifiquement la régulation du débit d'une pompe à sang pendant une intervention chirurgicale à circulation extra-corporelle pour imiter le débit sanguin pulsatoire normal provenant du coeur, et la régulation d'une sortie de ventilateur pour imiter la ventilation normale de poumons sains. Un modèle de variation dans le temps d'un écoulement instantané d'un liquide biologique vers un organe d'un sujet mammifère est établi, un paramètre de régulation variable pour réguler l'écoulement du liquide biologique vers l'organe est généré en fonction du modèle et l'écoulement du liquide biologique vers l'organe est régulé en fonction du paramètre de régulation variable.

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